Description
Original Airdate10/02/2019
Uncovering subterranean phenomena around the globe, their impressive stories, unique origins, essential roles throughout history, and the secrets they keep hidden deep below.
Underground Marvels
Where to watch Underground Marvels
- Free On Demand on Science Channel
10. Medieval Maze of Secrets
Air Date 10/07/2021
A forgotten world of ancient underground passages and medieval engineering lies hidden beneath the town of Exeter, England; experts investigate and reveal how this ambitious tunnel system was the result of one of the deadliest epidemics in history.
9. Ireland's Underground Alcatraz
Air Date 08/31/2021
Subterranean military fortresses situated on the southern coast of Ireland have protected against enemy invasion for over 400 years, and now, experts investigate how this powerful stronghold transformed into a brutal and terrifying prison.
8. Italy's Subterranean Secret
Air Date 09/16/2021
An unprecedented landslide unveils a hidden world beneath a picturesque town in northern Italy, and now experts investigate this vast network of tunnels and passageways that stretch 300 feet underground to reveal the city's subterranean past.
7. Subterranean Silo Survival
Air Date 09/09/2021
A decommissioned missile launch facility in Kansas remained one of the best kept subterranean military secrets of the Cold War; experts reveal how this abandoned underground complex transformed into a state-of-the-art survival bunker.
6. Buried Lab of the Black Hills
Air Date 08/26/2021
Buried nearly a mile beneath the Black Hills of South Dakota is a cutting-edge laboratory at the forefront of astonishing scientific research; experts reveal advancements engineers achieved more than a century ago that keep it operating today.
5. Mystery of the Kentucky Cave
Air Date 08/12/2021
The longest known cave system in the world spans hundreds of miles beneath the hills of Kentucky, and containing prehistoric artifacts and ancient human remains, experts reveal a subterranean mystery that may have changed the course of U.S. history.
3. Murder Raid Tunnels
Air Date 09/30/2021
Hidden beneath the town of Ramsgate, England, lies a hidden network of over three miles of air raid tunnels; experts investigate and uncover an extensive WWII bomb shelter that became a permanent refuge for many civilians after a devastating attack.
2. Cincinnati's Secret Caverns
Air Date 08/19/2021
Deep beneath the streets of Cincinnati lies a network of deserted tunnels and caverns that contain a remarkable history of the city's origins, and now, experts investigate to reveal who built this underground labyrinth and why it was abandoned.
1. Hotel Bunker of the Apocalypse
Air Date 08/05/2021
The top-secret construction of a massive nuclear bunker remained concealed under a palatial West Virginia hotel for decades; experts reveal how this vast subterranean structure was one of the most closely guarded Cold War secrets in U.S. history.